$ git clone -n https://gitee.com/src-opencloudos-rpms/serd.git /var/lib/mock/dist-oc9-epol-build-54362-14768/root/chroot_tmpdir/scmroot/serd
Cloning into '/var/lib/mock/dist-oc9-epol-build-54362-14768/root/chroot_tmpdir/scmroot/serd'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/serd
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29559d5 import serd-0.30.16-2.tl4